Superhydrophobic coating technology

Superhydrophobic substrate and method for manufacturing same

The present invention relates to a superhydrophobic substrate, in which multiple protruding parts are arranged in a pseudo random distribution on one surface of the substrate and an average spacing between the protruding parts is larger than a visible light wavelength. The superhydrophobic substrate according to the present invention is advantageous in that the average spacing between the protruding parts is larger than the visible light wavelength to ensure durability, and the protruding parts are arranged in a pseudo random distribution to adjust the sizes and distribution of the protruding parts so as to ensure transparency of the substrate.

The present invention relates to a novel superhydrophobic polymer complex obtained by grinding plant leaves which are natural materials having hydrophobic or superhydrophobic surfaces, confirming if the leaf powder structurally exhibits hydrophobic or superhydrophobic properties, and adding the powder directly to a hybrid substance; more specifically, it relates to a polymer complex having superhydrophobic properties and heavy metal-selective absorption, which includes leaf powder structurally exhibiting hydrophobic or superhydrophobic properties which is acquired from plant leaves, and hydrophobic polymer and phenyl group-modified silica ormosil.

Powdered polymer composition for a superhydrophobic coating and method for producing a superhydrophobic coating

The invention relates to the field of chemistry, and more particularly to a powdered polymer composition for a superhydrophobic coating and a method for producing such a coating. The composition contains a base in the form of a powdered thermosetting composition with an epoxy polyester, epoxy, polyester or polyurethane film-forming agent, and additionally contains a modifier in the form of hydrophobic particles of a surface-modifying and texturing component with particle sizes from 5 nm to 35 ?m, in the following ratio: 95-99.5 wt% base; 0.5-5 wt% modifier. The method for producing a coating involves applying the above-mentioned composition to a surface and curing the applied coating by heating at a temperature of 180-190�? for 15-20 minutes. If necessary, a second layer containing micro- and nano-sized hydrophobic particles is applied to the uncured layer of composition. The invention provides a superhydrophobic coating with improved reliability and durability.

Method for introducing superhydrophobic articles into the human body

An article to be inserted into the human body has a superhydrophobic surface. The superhydrophobic surface is coated with a water soluble thin but durable protective coat. One positioned inside the body the coating is rapidly dissolved by the blood or other fluids and exposes the superhydrophobic surface. To coat article the water based coating is mixed with a liquid capable of wetting the superhydrophobic surface but is still dissolvable or at least miscible in the coating. As an example, a glucose or sucrose solution in water is mixed with alcohol and used to coat the surface. After water and alcohol evaporation, a durable protective coat of sugar remains. After the coated article is inserted into the body, the coating is rapidly dissolved and absorbed by the body.

Method for obtaining a hybrid latex and use thereof in hydrophobic and superhydrophobic coatings

The present invention relates to a siliconised hybrid latex that consists of a polysiloxane methacrylic copolymer of the formula (I), starting with at least one methacrylic monomer that is partially soluble in water, and at least one functionalised silicone-based macromonomer that is insoluble in water and highly hydrophobic, and to the use of said latex in a water-based formula, free of fluorinated compounds, generating highly hydrophobic or superhydrophobic surfaces with self- or easy-cleaning properties.

Renewable superhydrophobic coating

A method of forming a superhydrophobic material (66) includes mixing a hydrophobic material (24) with soluble particles (26) to form a mixture (32). The mixture (32) is cured. A portion of the soluble particles (26) is etched away from the mixture (32) to form the superhydrophobic material (66). A superhydrophobic material forming system (10) includes a mixer (30) that mixes a hydrophobic binder (24) with soluble particles (26) to form the mixture (32). A curing station (16) cures the mixture (32). An applicator (69) applies a solvent (68) to the mixture (32) to etch away a portion of the soluble particles (26) from the mixture (32) to form the superhydrophobic material (66).

Concrete element having a superhydrophobic surface

The invention relates to a concrete element comprising a superhydrophobic wall having a roughness Ra of between 1 ?m and 10 ?m and protuberances spaced out two by two at an average interval of between 1 ?m and 150 ?m. Said concrete element has a surface critical pore diameter of less than 100 nm and has parts flush with the wall, that are more hydrophobic than the concrete.

Superhydrophobic and transparent polymer structure and method for manufacturing same

The present invention provides a superhydrophobic and transparent polymer structure which is formed of a polymer and comprises a transparent substrate and a micro-sized protrusion part protruding in a lattice-shaped pattern on a surface of the substrate. According to the superhydrophobic and transparent polymer structure and the method for manufacturing the same, the superhydrophobic and transparent polymer structure can be produced by forming a micron-sized lattice-shaped pattern grove in a mold, and then forming a micron-sized protrusion part to protrude in a lattice-shaped pattern on a substrate, which is formed of a transparent polymer, through the pattern groove. Therefore, the superhydrophobic and transparent polymer structure can be applied to large areas and is easy to mass produce.

Process for the preparation of superhydrophobic film

Process for the preparation of a superhydrophobic film comprising the steps of applying a hydrophobic polymer in the liquid phase on a surface so as to form a layer of hydrophobic polymer, applying on said layer of hydrophobic polymer a membrane having a porosity of between 105 and 6×108 pores/cm2 in which the pores have a diameter smaller than or equal to 3 μm, subjecting said layer of hydrophobic polymer to a thermal treatment so as to form a superhydrophobic film, and removing said membrane.

Superhydrophobic coating for airway mucus plugging prevention

A method for reducing mucus accumulation in an airway including disposing an implantable device within an airway, wherein the implantable device has a first end, a second end, and an inner surface defining a lumen extending from the first end to the second end; wherein at least a portion of the inner surface has a hydrophobic polymer coating thereon, wherein a polymer coating surface has dynamic water contact angles of 145 degrees or greater; and wherein the implantable device is constructed and arranged to maintain patency of the airway; wherein accumulation of mucus is reduced as compared to a similar implantable device without the hydrophobic portion of the inner surface. An implantable medical device having a superhydrophobic surface and a method of making an implantable medical device having a superhydrophobic surface are also provided. An implantable medical device having a micropatterned surface with enhanced adhesion to tissue, optionally in combination with other region(s) having a superhydrophobic surface and a method of making such a device. Methods and devices for prevention of bacterial adhesion to implanted medical devices.

Nano materials application in durable medical equipment and method of using same

It is contemplated that the current invention may comprise applications utilizing nano-materials, such as but not limited to, superhydrophobic nano-materials, or carbon based nano-materials which may be applied in a spray, wipe on, powder, manufactured into the material or surface of durable medical equipment, devices, prosthetics and so forth.